CharXiv (Reasoning) — CharXiv reasoning subset, tools-enabled mode
| # | Model | Vendor | Best score | Runs | Last seen |
|---|---|---|---|---|---|
| 1 | Claude Mythos 5 | Anthropic | 93.5 | 2 | 2026-06-12 |
| 2 | Claude Opus 4.7 | Anthropic | 91 | 2 | 2026-06-21 |
| 3 | Claude Opus 4.8 | Anthropic | 89.9 | 3 | 2026-07-07 |
| 4 | Gemini 3.6 Flash | 89.4 | 1 | 2026-07-22 | |
| 5 | Gemini 3.7 Flash | 88.7 | 1 | 2026-08-14 | |
| 6 | Muse Spark 1.1 | Meta | 88.4 | 1 | 2026-07-21 |
| 7 | Claude Sonnet 5 | Anthropic | 88.3 | 1 | 2026-07-07 |
| 8 | Claude Sonnet 4.6 | Anthropic | 85.3 | 1 | 2026-07-07 |
| 9 | Gemini 3.5 Flash | 84.9 | 1 | 2026-07-22 | |
| 10 | Claude Opus 4.6 | Anthropic | 84.7 | 2 | 2026-06-21 |
| 11 | Gemini 3.1 Pro | 83.2 | 1 | 2026-07-22 |
Best tracked score per model (default configuration; source-attributed and verification-tiered). Open a model for its full benchmark surface, provenance and pricing.